
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width" />
    <meta name="apple-itunes-app" content="app-id=ctrip, affiliate-data=myAffiliateData, app-argument=myURL" />
    <title>toDataUrl</title>
    <style type="text/css">
    </style>
    <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<script type="text/javascript">
    loadXMLDoc();
    function loadXMLDoc(){
        var xmlhttp;
        var result;
        if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari
            xmlhttp = new XMLHttpRequest();
        }
        else{// code for IE6, IE5
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        xmlhttp.onreadystatechange=function(){
            if( xmlhttp.readyState == 4 && xmlhttp.status == 200 ){
                result = xmlhttp.responseText;

            }
        }
        xmlhttp.open("POST","/open/common/OpenScreen/isUserLogin.json",true);
        xmlhttp.send();
    }


</script>
</body>
</html>